This sealant, available at a major home improvement retailer, is a pliable substance used to close gaps and joints against air, water, dust, and pests. A common application is sealing around bathtubs, sinks, windows, and door frames. Its neutral color allows it to blend well with a variety of surfaces. For example, it can be used to create a watertight seal between a grey-tiled shower surround and the shower pan.
The value of this type of sealant lies in its ability to prevent water damage, improve energy efficiency by preventing drafts, and enhance the aesthetic appeal of completed projects. Historically, sealing compounds like this were made from natural materials like tar and beeswax. Modern formulations offer improved durability, flexibility, and resistance to mildew and UV degradation, extending the lifespan of the seal.